Paste your PAC file or upload it, enter one or more test URLs. You'll instantly see the result (DIRECT/PROXY) and which return line in the source produced it.
Paste the text or choose a file.
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View live demoIt runs the FindProxyForURL function of your PAC file against one or more test URLs and shows the result (DIRECT or PROXY host:port) plus which return line in the source produced it.
No. Evaluation runs entirely in the browser in an isolated sandbox (sandboxed iframe without network or parent-window access); there is no server round trip.
No, deliberately not. Real DNS resolution would require a network request and would contradict the promise that the PAC file never leaves your machine. Functions like dnsResolve or isInNet with hostnames therefore return a documented empty value for hostnames instead of a fabricated answer - for IP addresses they work normally.
The complete standard Netscape PAC API: isPlainHostName, dnsDomainIs, localHostOrDomainIs, isInNet, shExpMatch, dnsDomainLevels, weekdayRange, dateRange, timeRange, plus the IPv6 extensions isInNetEx/isResolvableEx/myIpAddressEx. Date/time and the simulated local IP can be set for reproducible tests.
